Lubricating apparatus



Aug. 7; 1928.

O. ZERK, NOW BY JUDICIAL CHANGE OF NAME 0. U. ZERK I LUBRICATINGAPPARATUS Filed Nov. 21, 1922 2 Shets-Sh eet 1 v wm r 411.15:

sIlllIlllllllllHHlh fly OSCAR U.ZERK IAVENTOR.

HIS ATTORNEYS Aug. 7, l928.

0. ZERK, NOW BY JUDICIAL CHANGE OF NAME 0. U. ZERK L UBR I CAT INGAPPARATiJS 2 Sheets-Sheet 2 Filed Nov. 21. 1922 OfiCARUZERK,

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hi5 Gram y Patented Aug. 7, 1928.

onrrso STATES TE 'r orrics.

OSCAR ZERK, NOW BY JUDICIAL CHANGE OF NAME O$CAR ULYSSES ZERK, OF CLEVE-LAND, OHIO, ASSIGN OR, BY MESNE ASSIGNMENTS, TO THE BASSICK MANUFACTUR-ING comm.

LUBRICATING APPARATUS.

' Application filed November 21, 1922. Serial No. 602,466.

This invention relates to improvements in movement automatically drawslubricant lubricating apparatus, and more particularly to that class ofdevices comprising a lubricant container and manuallyoperable mean fifor ejecting lubricant therefrom.

An object of this invention resides in the construction of a nipple anda one hand operated lubricating pistol, whereby a direct manuallymaintained leak proof contact can be formed therebet-ween, and lubricantdelivered into the nipple from the pistol, by

manually pressing the pistol against the nipple.

Another'object of this invention resides in the construction of alubricating pistol which can be held in one hand and placed in directleak proofcontact with the nipple, and while so held will compress anddeliver lubricant thereto, solely by pressure thereagainst.

Another object of my invention is to provide a lubricant dispensingpistol with a container having a relatively stationary plunger thereinto create pressure against the lubricant trapped within a reciprocatingdelivery nozzle, when the nozzle is placed in contact with the nippleand the container is manually pressed toward the nipple.

Another object of this invention resides in 80 providing a manuallyoperated lubricating pistol, with a lubricant container and aselffilling reciprocating delivery nozzle secured in eccentric relationthereto. to permit the lubricant to be drawn into the nozzle from 85 anyposition in which the receptacle is held.

Another object is to protect the walls of the container from themechanical strain incident to developing high pressure in the ejectingmeans.

Another object of my invention resides in the manner in which theplunger is secured to the wall of the lubricant containing receptacle.-

Another object resides in the construction of the inner end of thereciprocating delivery nozzle and its relation with the stationaryplunger whereby it will guide the plunger when pressed therein.

Another object of my invention resides in so the provision of resilientmeans for automatically returning the reciprocable nozzle to normalextended position when pressure thereagainst is released, which returninto the nozzle from the receptacle.

These and other objects will appear in the specification and claims, andare illustrated in the accompanying drawings in which Fig. 1 is a sideelevation of an assembled lubricating pistol Figure 2 is a longitudinalsection through the same and a nipple, show-' ing the pistol inoperative contact with the nipple; Figure 3 is a-side elevation of thenipple shown in Figure 2; Figure 4 is a side elevation of a modifiedform of nipple; Figure 5 is a sectional view of the modified form ofnipple; Figure 6 is a sectional View taken on line AA of Figure 7illustrating the manner in which the plunger is secured within thecontainer; and Figure 7 is a side elevation of a modified form of pistolin which the container is the only handle means provided.

Referring to the drawings to illustrate two specific embodiments of myinvention for the purpose of explaining the same, 10 designates a fluidlubricant container comprised of twosections 11 and 12, one of which isflared sufficiently at its open end to fit over the open end of theother and form a pressure fit therewith. If desired, these over-.

lapping portions of the two sections may be threaded and screwedtogether.

An inwardly extending, internally threaded, circular boss 13 is formedeccentrically in the end wall of the section 11 of the receptacle, andan externally threaded, elongated-bearing 14 is screwed into said boss.The boss is preferably located near the periphery of the container, forreasons hereinafter setforth.

A hollow rigid outlet nozzle'15 is reciprocably mounted within thebearing 14, and the inner open end 16 thereof extends within thecontainer and is flared to prevent longitudinal displacement thereof. Ahollow connector 17 is pressed on the outer end of the nozzle 15 andforms an integral rigid unit therewith. A ball valve 18 is positionedwithin the hollow'connector and is normally seated against therestricted end 19 of the nozzle, by a coil spring 20, also positionedwithin the hollow connector. The end of the connector provides a contactface 21 comprising a concave spherical portion 22 and an annular flange,or finder 23,

Section 12 has a square or otherwise noncircular opening opposite theboss 13 and in axial alignment therewith. A plunger extends through theopening 24 and extends slightly within the flared end 16 of thenozagainst the inner end wall of the section 12 of the container, and atthe other end against the flared open end 16 of the reciprocatingnozzle.

The plunger 25 may project exteriorly of the container, as shown inFigs. 1 and 2 to provide an extended handle 30- which is longitudinallyknurled to receive the oval hand grip 31, which is driven thereon.

A nipple 32 has an open end 33 which is adapted to be driven into anopening of an element to be lubricated. The outer end 34 of the nippleis curved inwardly, forming a restricted contact end which preferably isprovided with a centrally disposed small in let opening therein. InFigs. 4 and '5, I have illustrated a modified form of nipple 36, theouter end of which is provided with a hollow elbow 37 extending therein,at an angle of substantially 60 degrees to the longitudinal axisthereof. The projecting end of this nipple provides a contact face 38and an inlet opening of small diameter is provide therein. This modifiedtype of nipple is designed especially for being positioned ininaccessible places requiring lubrication, and takes the place of anadditional coupling, or angle nipple, such as are now used in thisconnection.' The peripheral circular edge. at the restricted end of thenipple is small enough to fit within the spherical recess in the contactface of the connector and form a leak proof contact therebetween when sopositioned. It will be observed that the spherical recess will allow thepistol to be held at various angles with the nipple, and retain the leakproof contact with the peripheral edge thereof, which contact ismaintained until the spherical recess in theconnector is moved to suchan angle with the circular peripheral edge of the nipple that a portionof the edge of the nipple is removed from the spherical recess. Thus itwill be seen, that an exact positlon is not necessary, allowing a quickcontact to be made, and also permitting the gun to be held at an angleto the nipple,

which is very advantageous when the nipple is hard to reach.

It will be noted that there is in area between the contacting portionsof the inlet face of the nipple and the outlet face of the gun nozzlewhich is sufficiently small so that the product of the area so formedmultiplied by the pressure of the lubricant acting thereon, per unit ofarea, is less than'the amount of contact maintaining pressure exerted bythe pressure of the gun nozzle against the nipple. Such constructionprevents unseat-ing of the nozzle contact face by the pressure of thelubricant contained in the space between the faces when in operation,thereby preventing loss of lubricant and loss of pressure of suppliedlubricant.

The spring 29 normally retains the reciprocable nozzle in extendedposition, and in this position the plunger 25 lies within the flaredguide at the end of the nozzle, but is spaced therefrom sufliciently toallow the open end of the nozzle to be in open communication with theinterior of the container. To operate the pistol, the user grasps thestationary handle 31 in one hand, and places the contact face of theconnector against the peripheral edge at the end of the nipple formingan osculatory contact therebetween. The finder 23 will direct theperipheral edge of the nipple into contact with the spherical recessadjacent thereto,

and a slight forward pressure against the handle willprovide a leakproof contact between the spherical recessed face of the connector andthe nipple. When such osculatory contact is made the user pressesagainst the handle, causing the nozzle to move into the container, whilethe container and plunger move toward the nipple. The plunger will thusenter the open end of the nozzle, and in so doing close the nozzle, andtrap lubricant therein.

As the nozzle moves into the container, the plunger compresses thelubricant trapped therein, until the spring tension against the valve 18is overcome, whereupon the compressed lubricant passes through theconnector and into the nipple. When suflicient lubricant has beenejected, or when the supply is exhausted, the pressure against thehandle is released, whereupon the valve will close and the spring 29will press the nozzle back to extended position. The plunger when thusmoving out of the nozzle creates a vacuum therein, so that when it isremoved therefrom and open communication is established between thenozzle and the container,

a new charge of lubricant will be drawn into with the exception of whenthe nozzle is held too. directly upward. In this event in the embodimentillustrated, it is necessary to hold the nozzle downward to refill thesame; This arrangement keeps the fluid over the open end'of the nozzleand prevents airfrom being drawn therein when filling.

-When it is necessary to replenish the supply of lubricant within thecontainer, the bearing 14 carrying the nozzle is unscrewed, and thelubricant is. injected into the container through the hollow boss 13.

In Figure 7 I haveillustrated a pistol in which the container is theonly handle means provided. The container in this instance is providedwith a transverse recess into which the ends of the users fingers willfit when the container is grasped by his hand. This pistol is operatedin the same manner as that previously described.

The pressure lubricating device herein described has been designated asa pistol because of the fact that it can be held in one hand whilemaking the contact with and injecting the lubricant into the nipple. Itwill be noted also that the container for the pistol of my invention asshown can be made with only a single opening, same opening having afilling, nozzle holding and plunger receiving functions.

Thus it will be seen that I have constructed a pistol which willmaintain a direct oscu-' latory metal to metal contact with a nipple,

(ill

while held in one hand by the user, and which when so held can beoperated to inject lubricant under-pressure into the nipple.

In the simple construction shown, only one check valve is required andthat is located where it is easily accessible for cleaning and repair.When handle 31 is used, the force required to slide the tube 15 over theplunger, is not imposed on the walls of the container. In using thestructure of Figure 7, if the force required is at all large, as whenresistance to flow is encountered, the users hand will grip thecontainer more closely, and the users thumb will naturally slip acrossto a position substantially over the plunger 95.

Various changes in detail can be made without departing from the spiritof my invention and scope of the appended claims.

What I claim is 1. A lubricating pistol comprising a lubricantcontainer,a valve controlled outlet nozzle telescopically secured to and in opencommunication with said container, said noz zle including means forforming a sealed connection with a lubricant receiving nipple, and meansto close the inner end of said nozzle and eject the lubricant trappedtherein when said nozzle and container are tele. scoped. Y

2. A high pressure lubricant compressor of the class describedcomprising a lubricant container, an outlet nozzle telescopicallysecured to and 1n communication wlth sa1d container, an outlet valve forthe nozzle,

means for establishing a sealed connectioning means when said nozzle isapplied to a part to be lubricated.

4. A lubricating pistol comprising a container, a nozzlereciprocablysecured to and in communication with said container, an outlet valve forsaid nozzle, a plunger positioned to telescope into said nozzle, ahandle for said pistol connected direct to said plunger,- and a returnspring for extending said nozzle.

5. A lubricating pistol comprising a container having a non-circularopening in one end thereof, an outlet nozzle-in communication with andreciprocably secured to one end of said container, and a plungerextending into said container and adapted to enter and eject lubricantfrom said nozzle, said plunger having a non-circular shank portionextending through the non-circular opening in said container and havingprojecting portions extending radially therefrom adjacent the end Wallto prevent longitudinal displacement.

6. A lubricant dispensing pistol comprising a container, a nozzletelescopically mounted in one wall of said container, and a plunger insaid container for entering said nozzle, said plunger extending throughto the opposite container wall.

7. A lubricant dispensing device comprising a' container, a nozzletelescopically mounted in one wall of said container, and a plunger insaid container for entering said nozzle, said plunger extending throughto the opposite container wall, said nozzle having a flaring rear end toguide it over the end of said plunger.

8. Apparatus for dispensing lubricant at high pressure comprising acontainer, a discharge nozzle' therefor relatively reciprocabletherewith and secured thereto and having communication with saidcontainer, a

ing a cylinder, coupling means for forming.

a lubricant-tight connection with a part to be lubricated, a plunger forexpellingthe contents of said cylinder, and a container for refillingsaid cylinder, said container being carried by said plunger andrecipr0cat ing therewith.

1 1. A device for dispensing lubricant at high pressure comprising acontainer, a cylinder reciprocably supported by andin communication withsaid container, and means for expelling liquid from said cylinder andforpreventing the pressure developed in said cylinder from vbeingcommunicated to said container.

12. A lubricating pistol comprising a lubricant container, an outletnozzle telescopically secured and in open communication with saidcontainer, means to close the inner end of said nozzle and eject thelubricant trapped therein when said nozzle and container are telescoped,a terminal threaded to the discharge end of said nozzle, an outwardlyopening check valve controlling said nozzle and a spring for said valve,said'terminal forming an abutment for said spring to hold both springand valve in place.

13. A lubricant compressor comprising a barrel, a discharge sleevetelescopically mounted in one end of said barrel, a plunger coaxial withsaid sleeve, a rigid abutment on said barrel for the rear end of saidplunger, and a coil spring encircling said plunger and abutting saidsleeve to hold the plunger and sleeve apart.

14. A lubricant compressor comprising a barrel, a discharge sleevetelescopically mounted in one end of said barrel, a plunger coaxial withsaid sleeve, a rigid abutment on said barrel for the rear end of saidplunger, and a coil spring encircling said plunger and abutting saidsleeve to hold the plunger and sleeve apart, said plunger fitting saidsleeve to trap and expel the contents thereof under high pressure whensaid sleeve is telescoped over said plunger.

15. A high pressure lubricating pistol of the class described comprisingportable lubricant containing means, a sleeve reciprocably'mounted inone end of said means, a spring operatively interposed between saidsleeve and said containing means and serving normally to maintain saidsleeve in extended position, a check valve adjacent the outer end ofsaid sleeve, said sleeve terminating in a part adapted to form a contactseal with a lubricant receiving nipple, a solid plunger fixedly mountedin said containing means, said plunger serving to eject lubricant fromsaid sleeve at high pressure and controlling the admission of lubricantto said sleeve, and a handle part at the other end of said containingmeans.

16. A lubricant compressor comprising in combination a portablecontainer, a sleeve slidably mounted in one Wall thereof, resilientmeans for normally maintaining said sleeve in extended position, aplunger for trapping lubricant in said sleeve and expelling thelubricant therefro n at high p1 essure, said sleeve having a partadjacent its inner end for guiding said plunger, valve mears at. theouter end of said sleeve, and means carried by said sleeve for effectinga lubricant tight seal with a part to be lubricated.

In witness whereof, I have hereunto signed my name this 18th day ofNovember, 1922. OSCAR ZERK.

